*{
    margin:0;
    padding:0;
}
ul,li,ol{
    list-style: none;
}
a{
    text-decoration:none;
}
.clears{
    clear:both;
    height:0;
    line-height:0;
    font-size:0;
    overflow: hidden;
}
.navda{
    width: 280px;
    height: 670px;
    float: left;
    margin-left: 30px;
}
.nav{
    width: 280px;
    height: 200px;
    background: #393D49;

}
.text{
    height: 40px;
    width: 280px;
    line-height: 40px;
    text-align: center;
    color: white;
    font-size: 20px;
}
.title{
    height: 60px;
    width: 1100px;
    float: left;
    margin-left: 10px;
    background: #eeeeee;
}
h1{
    height: 60px;
    line-height: 60px;
    text-align: center;
    background: #eeeeee;
}
.demo{
    width: 1100px;
    height: 560px;

    margin-left: 10px;
    float: left;
}
.footer{
    width: 1100px;
    height: 50px;
    background: #2F4056;
    float: left;
    margin-left: 10px;
}
.footer p{
	width:250px;
	height:50px;
	line-height:50px;
	text-align: center;
	font-size:20px;
	margin-left: auto;
    margin-right: auto;
    color: white;
}
.ron1{
    width: 1100px;
    height: 560px;
    background: #eeeeee;
    display: block;
}
.ron2{
    width: 1100px;
    height: 560px;
    
    display: none;
}
.ron3{
    width: 1100px;
    height: 560px;
    background: #eeeeee;
    display: none;

}
.ron4{
    width: 1100px;
    height: 560px;
    background: #eeeeee;
    display: none;
}
.ron5{
    width: 1100px;
    height: 560px;
    background: #eeeeee;
    display: none;
}
.ron6{
    width: 1100px;
    height: 560px;
    background: #eeeeee;
    display: none;
}
.ron2_1{
     width: 620px;
     height: 560px;
     float: left;
     
     margin-left: 10px;
 }
.ron2_2{
    width: 420px;
    height: 560px;
    float: left;
   
    margin-left: 15px;
}
.ron4_1{
     width: 250px;
     height: 560px;
     float: left;
     
     margin-left: 10px;
 }
.ron4_2{
    width: 800px;
    height: 560px;
    float: left;
   
    margin-left: 15px;
}
.tou{
	width:420px;
	height:200px;
}
.gn{
	background: #009688;
}